CLI: --worktree (-w) flag silently ignored, no worktree created

Bug

Running claude -w my-test --debug does not create a git worktree. The flag is silently ignored with no error or debug output.

Steps to reproduce

1. Navigate to a git repository
2. Run claude -w my-test --debug
3. Observe that the session starts in the main repo directory
4. Check git worktree list — no new worktree was created
5. Check the debug log — zero worktree-related entries

Expected behavior

A new git worktree named my-test should be created and the session should run inside it.

Actual behavior

• The -w my-test flag is silently ignored
• The session runs in the main repo working directory
• The debug log contains no worktree-related processing at all — the flag appears to be parsed by Commander but never acted on
• No error message is shown to the user

Environment

• Claude Code version: 2.1.50
• Platform: macOS (Darwin 25.2.0)
• Node: v24.3.0
• Git worktrees are otherwise functional in the repo (existing worktrees work fine)

Debug log excerpt

The full debug log shows normal startup, MCP server connections, and tool usage — but zero references to "worktree", the name "my-test", or any git worktree commands being executed.